Shelf



FIG. 1 is a perspective view of a shelf shown in a folded position.

FIG. 2 is a front view of FIG. 1.

FIG. 3 is a rear end view of FIG. 1.

FIG. 4 is a left end view of FIG. 1.

FIG. 5 is a right view of FIG. 1.

FIG. 6 is a top view of FIG. 1.

FIG. 7 is a bottom view of FIG. 1.

FIG. 8 is a perspective view of a shelf shown in an extended position.

FIG. 9 is a front view of FIG. 8.

FIG. 10 is a rear end view of FIG. 8.

FIG. 11 is a left end view of FIG. 8.

FIG. 12 is a right view of FIG. 8.

FIG. 13 is a top view of FIG. 8; and,

FIG. 14 is a bottom view of FIG. 8.

The broken-line disclosure is for illustrative purposes only and forming no part of the claimed design. 

CLAIM The ornamental design for a shelf, as shown and as described. 